Мочевина техническая. Определение буферной емкости. Потенциометрический метод
Название (англ.):
Urea for industrial use; Determination of the buffer coefficient; Potentiometric method
Описание (англ.):
Applicable to solutions of conventional concentration. The principle consists in measurement, at (20 0.5) 0C, of the quantity of 0.05 N acid solution required to effect a pH change from 8 to 6 for a solution containing 100 g of urea in 1000 ml of solution. For the measurement a pH meter is used fitted with a glass electrode and a calomel electrode. The method has also been approved by the IUPAC.
Дата регистрации:
01.12.73
Дата введения:
01.11.73
Дата отмены:
30.05.02
Код КГС:
Л29
Код ОКСТУ:
2181;2109
Код ОКС(МКС):
71.080.30
Код ОКП:
2181;2109
Нормативные ссылки:
BS 4279-1968, NEQ*NBN T 04-307-1983, EQV*NF T20-594-1965, NEQ*NP-1630-1979, EQV
Ключевые слова:
BUFFERS (CHEMICAL) BUFFERS (CHEMISTRY) CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING POTENTIOMETRIC METHODS UREA UREAS CHEMICAL ANALYSIS AND TESTIN BUFFERS : CHEMISTRY